Standoff at checkpoint approaching the Hoover Dam

A man didn't stop at a checkpoint approaching the Hoover Dam Tuesday evening before peacefully surrendering to authorities after realizing he was unable to get out, officials said.

After driving through the check point on the Nevada side, authorities raised a barrier trapping the man between a SWAT truck and the barrier. He attempted to turn around, but had nowhere to go, said Rose Davis, a Bureau of Reclamation spokeswoman.

The unidentified man came out of his vehicle and surrendered unarmed, officials said.

Employees and visitors were evacuated to the Arizona side and all operations were back to normal about an hour later, Davis said.

It is unclear clear at this time if the man will face federal or state charges, Davis said.